40 Extra Crown Coin Boost

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40 Extra Crown Coin Boost

Amusnet · slots

40 Extra Crown Coin Boost is a 40-payline Amusnet slot that grafts the Coin Boost bonus onto the established Extra Crown formula. Five reels, four rows, sticky Coins that climb through upgrade levels, and a full-grid 2x multiplier when every position fills. Three Bonus Buy tiers let players skip the base game and jump straight to different Coin setups – standard, stripped of low values, or Jackpot-only. The series has sprawled sideways through payline counts and small rule tweaks for years; this version adds real bonus depth without pretending to reinvent anything.

40 Extra Crown Coin Boost
Provider Amusnet
Release date July 15, 2026
Restricted countries AF,AO,AS,AU,BG,CA,DK,GB,GR,GU,HK,IL,IQ,IR,LT,MP,MT,NI,NL,NO,PE,PR,SE,SG,SY,TW,UM,US,VI

Play this slot Free Demo

Test the 5x4 grid, Coin Boost mechanics, and three Bonus Buy options directly - no registration, no deposit. Watch how highlighted positions upgrade sticky Coins and how the full-grid trigger doubles your bonus win.

Demo isn’t available for this game yet.

Provider Amusnet
Game Type slots

Where to play this game

Game Layout and Betting Range

this slot runs on five reels, four rows, and 40 fixed paylines. Wins count left to right on consecutive reels. Minimum bet is €0.40 per spin; maximum reaches €100, leaving room for both cautious stakes and larger wagers.

Symbols and Paytable

The paytable mixes classic fruit symbols with two Scatter types. Dollar Scatter pays across all five reels (5x for three, 20x for four, 100x for five). Star Scatter lands only on reels 1, 3, and 5 (20x for three). Red 7 is the premium regular symbol at 25x for five; Watermelon, Grapes, and Bell follow at 10x, 10x, and 3.75x respectively. Lower-tier fruit (Plums, Orange, Lemon, Cherries) range from 2.5x down to 0.25x for five.

Symbol 3 of a Kind 4 of a Kind 5 of a Kind
Dollar Scatter 5x 20x 100x
Star Scatter 20x
Red 7 1.25x 6.25x 25x
Watermelon 1x 2.5x 10x
Grapes 1x 2.5x 10x
Bell 0.5x 1x 3.75x
Plums 0.25x 0.5x 2.5x
Orange 0.25x 0.5x 2.5x
Lemon 0.25x 0.5x 2.5x
Cherries 0.25x 0.5x 2.5x

Wild symbols land on reels 2, 3, and 4 only. They substitute for all regular symbols but cannot replace either Scatter.

Cash Coins and Jackpot Coins

Cash Coins sit dormant during base-game spins – they only activate inside the Coin Boost bonus. Their payout depends on which level they reach. Jackpot Coins work the same way: inactive in the base game, they pay fixed prizes once the bonus begins.

Cash Coin Level Payout Range
Level 1 0.5x to 3x the bet
Level 2 3x to 7x the bet
Level 3 10x to 25x the bet
Level 4 30x to 50x the bet
Jackpot Coin Type Fixed Prize
Mini 10x the bet
Minor 30x the bet
Major 100x the bet
Grand 1,000x the bet

Coin Boost Feature – How It Triggers and Plays

Coin Boost has two entry routes. Any Coin landing during the base game can trigger the round at random. Coins that don’t trigger move into a meter on the left side of the screen, feeding the Mystery Trigger – which can activate randomly and drop at least one Coin before the bonus begins. Both paths award five Free Spins to start.

Once inside, only Coins remain on the grid. Every Coin that lands sticks in place until the feature ends. Before each spin, several positions highlight on the grid. If a Coin sits on a highlighted spot, it upgrades by one level. If that Coin is already at its highest level, the upgrade jumps to a random adjacent Coin instead. A special +Spin Coin can land during the round and add between two and five extra spins.

The feature ends when the final spin completes or when Coins fill every position on the grid. Filling all positions triggers a 2x multiplier on the total bonus win – a sharp incentive to keep Coins sticky and climbing.

Bonus Buy Options

Three Bonus Buy tiers let players skip the base game and jump directly into Coin Boost with different setups.

Bonus Buy Option Cost Feature Version
Standard Coin Boost 35x the bet All Coin types available
Enhanced Coin Boost 100x the bet Low-level Coins removed
Jackpot-Only Coin Boost 250x the bet Jackpot Coins only

Fixed and Progressive Jackpots

this slot layers two jackpot systems. Fixed jackpots appear through Jackpot Coins during the Coin Boost round. Mini, Minor, and Major Coins can land directly; the Grand prize (1,000x the bet) can only be reached by upgrading a Coin through the level system.

The progressive jackpot system runs in the base game and activates after any paid spin made at a qualifying stake. The trigger opens a pick game with 12 face-down cards. Players pick until three cards of the same suit appear, unlocking the matching jackpot. These progressive prizes are available only at the minimum qualifying bet set by the casino. Current values display above the reels beside the four suit icons and rise as eligible base-game wagers feed the pools.

Gamble Feature

Wins worth up to 35x the initial bet can be gambled. Players pick red or black on a card; a correct prediction doubles the amount. Depending on operator settings, one win can be gambled up to five times in succession. One wrong guess forfeits the entire gambled amount.

RTP / Volatility / and Max Win

this slot carries a 96.02% RTP, placing it at standard modern-slot territory. This percentage is a long-term average and does not predict individual session results. Volatility is medium-high. Base-game payline and Scatter wins keep the game moving; the Coin Boost round, fixed jackpots, progressive system, and Bonus Buy options account for the larger prize potential. Maximum win reaches 1,000x the bet, delivered through the Grand Jackpot Coin inside the bonus round.

Mobile Play

The slot adapts well to mobile screens. The 5×4 grid stays readable despite the Coin Boost meter and progressive jackpot panels flanking the reels. Coin levels, highlighted upgrade positions, and jackpot labels remain visible during the bonus round. Portrait mode suits regular spins; landscape gives the full layout more breathing room. The game runs through the browser at compatible casinos – no app required.

Pros

  • 96.02% RTP is competitive for medium-high volatility
  • Coin Boost stacks upgrades, sticky positions, extra spins, and a full-grid 2x multiplier into one tight mechanic
  • Three Bonus Buy tiers let players choose their Coin setup - standard, no low values, or Jackpot-only
  • Fixed and progressive jackpot layers add depth without bloat
  • Gamble doubles wins up to five times for players comfortable with the risk

Cons

  • The left-side meter has limited practical value since the Mystery Trigger remains purely random
  • Coin Boost starts with only five spins - upgrades must climb fast to fill the grid
  • Base game changes little from earlier Extra Crown releases; the series feels like a sideways shuffle rather than a fresh direction
  • Progressive jackpots require a qualifying minimum bet, limiting access at lower stakes

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Ana Ilinca
Ana Ilinca
Slot Content Writer & Game Reviewer

Ana Ilinca Petrescu is a slot content writer and reviewer focused on new releases, provider trends, and player-facing game guides. She covers upcoming slot launches, mechanics breakdowns, and theme analysis, translating technical RTP and volatility data into clear, practical guidance for players. Ana has written extensively about provider pipelines and release calendars, with a particular interest in how bonus features and math models shape player experience. She joined the editorial team to bring a player-first perspective to technical slot analysis.

Reviewed by Marek Dvořák – Senior Slot & Game Mechanics Analyst

Editorial rating: 4.0/5

this slot is a functional branch of a sprawling series. It grafts Coin Boost - with its sticky upgrades and full-grid multiplier - onto the familiar 40-payline Extra Crown frame, adding fixed and progressive jackpots, three Bonus Buy tiers, and a Gamble feature. The bonus round is where the slot shows teeth; the base game stays close to formula. For players already comfortable with Amusnet's fruit-slot DNA and Hold n Win mechanics, this is a solid, if unremarkable, entry. That trade-off is real.

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